What is the best way to keep my Ford Focus engine cool?

I recently bought a Ford Focus and I'm worried about keeping the engine cool during hot weather. I've heard conflicting information about whether to let the car idle or turn it off, and I'm not sure what is the best approach. What do you recommend?

In my experience, it's best to turn off the car and let it cool down. Letting it idle can actually lead to more heat build up in the engine.

I always recommend using a heat shield or sunscreen on your windshield when parking in the sun. This can greatly reduce the temperature in your car and help keep your engine cool.